电磁阀的热物理场数值仿真与试验研究

以某型航空发动机控制系统上的电磁阀为研究对象,建立其流固耦合模型,开展热物理场数值仿真研究,对其不同工况下的热物理场特性进行分析。同时搭建试验系统进行试验验证,根据试验结果对仿真模型及参数进行优化迭代,并得出结论:在实际使用过程中,电磁阀的温升主要受环境温度、外加功率、内部结构及外部热交换条件的影响,电磁阀的热物理场数值仿真结果与试验数据的最大误差为7.0%,数值仿真模型准确度较高,能有效地预测电磁阀的温度场分布。该模型可指导电磁阀热设计,具有较高的实际工程应用价值。

Numerical Simulation and Experimental Study of Themophysical Field for Solenoid Valve

A solenoid valve on a certain type of aeroengine control system is studied, and its fluid-solid coupling model is established. A numerical simulation on themophysical field is conducted to analyze its themophysical field characteristics under different working conditions. At the same time, a test system is built and the experimental verification is carried out, and the simulation model and parameters are optimized and iterated according to the test results, and we draw conclusions as follows: the temperature rise of solenoid valve is mainly affected by ambient temperature, the applied power and internal structure during actual use; the maximum error of themophysical field results of solenoid valves between the simulation and the test is 7.0%, and the temperature field distribution of solenoid valve can be effectively predicted by the simulation model due to its high accuracy. The model can provide a theoretical guidance for thermal design of solenoid valve and has a high practical engineering application value.